package code;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.*;
class Ticket {
    private int count = 3; 			// 售卖总票数
    private Lock lock = new ReentrantLock();	// 互斥锁
    public void sale() { 			// 售票业务
        this.lock.lock();				// 资源锁定
        try {
            if (this.count > 0) { 		// 有剩余票数
                TimeUnit.SECONDS.sleep(1); 			// 模拟操作延迟
                System.out.println("【" + Thread.currentThread().getName() +
                        "】卖票，剩余票数：" + this.count--);
            } else {
                System.err.println("【" + Thread.currentThread().getName() +
                        "】票已卖完了，明天再来！");}
        } catch (Exception e) {
        } finally {
            this.lock.unlock();	// 解除锁定
        }}}
public class yootkdemo4 {
    public static void main(String[] args) throws Exception { 	// 沐言科技：www.yootk.com
        Ticket ticet = new Ticket();		// 对象实例化
        for (int x = 0; x < 5; x++) { 		// 创建售卖线程
            new Thread(() -> {
                ticet.sale();		// 售票处理
            }, "售票员 - " + x).start();}}}
